CN88212435U

CN88212435U - High efficiency gasification burner for industrial furnace

Info

Publication number: CN88212435U
Application number: CN 88212435
Authority: CN
Inventors: 汪育明
Original assignee: Individual
Current assignee: Individual
Priority date: 1988-04-15
Filing date: 1988-04-15
Publication date: 1988-12-21

Abstract

The utility model relates to a high efficiency gasification burner for industrial furnaces. The utility model is characterized in that the straight cylinder section of a flame tube is not provided with an air inlet hole or slot; the air inlet hole or slot of the flame tube is only arranged on the high temperature section of the burner, and the high temperature section of the burner is the truncated conical barrel of the flame tube; simultaneously, the outer wall of the truncated conical barrel is provided with an air guide blade; an air inlet passage is arranged between a cover plate and the truncated conical barrel; a cyclone is arranged on one end plate around an oil atomizer; a throttling orifice is arranged between the cyclone and an air inlet hopper, and the cyclone and the air inlet hopper are additionally provided with a conical flow guide cover. By the adoption of the measures, the thermal efficiency of the burner is improved, and the problems of the coke formation and the carbon deposition of the burner are solved.

Description

High efficiency gasification burner for industrial furnace

The utility model relates to a kind of used for industrial furnace high-efficiency gasification burner, and it belongs to by means of gaseous medium the burner class of drop or the direct spirt of evaporated liquid combustion space.

The used for industrial furnace oil burner generally is made up of institutes such as housing, burner inner liner, fuel injection nozzle and end plates, for solving problem such as the overheated and inwall coking carbon deposit of burner inner liner stack shell, abroad since the beginning of the seventies, progressively abandoned sending into from end plate and contiguous position thereof the practice of a large amount of combustion airs, the supplying gas of generation along the segmentation of flame propagation direction with strong eddy flow.In recent years, domestic patent or patent application of also having announced some this respects successively, disclose such as CN85200214 and a kind ofly only to have infeeded air about 15%, the burner that remaining air infeeds from annular space, air admission hole or the groove that is opened on the burner inner liner along the flame propagation direction near end plate (fuel injection nozzle); CN87204281 is then introducing the present utility model people design, sold by Zhuzhou lotus pool shop machinery plant July nineteen eighty-three, have supply gas the basis of G type burner with high efficiency of technical characterictic along the segmentation of flame propagation direction on, the a small amount of air inlet of a kind of end plate is disclosed, the burner that the tangential admission groove that a large amount of air are arranged from the burner inner liner in the shape of a spiral infeeds.Through concentrating on studies and testing for many years, the present utility model people thinks along the flame propagation direction segmentation this distribution scheme of supplying gas, also has obvious defects: one, and the flame situation is subjected to influenced by wind pressure bigger, and flame is difficult to stablize when violent when blast changes; Its two, too much along the air capacity that the burner inner liner barrel infeeds, make that burner inner liner inwall temperature drop is too much, this makes that the problem of burner inner liner inwall coking carbon deposit can not be eradicated completely; Its three, though that burner root eddy flow is crossed is strong inadvisable, do not have eddy flow also inadvisable fully, from helping the clean-burning angle of flame stabilization and fuel oil, the burner root should have suitable eddy flow.

The purpose of this utility model is to provide a kind of novel used for industrial furnace high-efficiency gasification burner, and it can overcome the above-mentioned deficiency of prior art.

Main points of the present utility model are prior art has been done following improvement: one, be provided with the cyclone that has the tangential admission groove on the circumference around oil plant atomizer (fuel injection nozzle) on the end plate, and described cyclone and for being situated between between the air inlet bucket of one throttle orifice is arranged with housing weldering, cone-apex angle also be housed in addition be 100 °～150 ° truncated cone shape kuppe on the cyclone, the kuppe outer rim is provided with air vane guide, leaves gas channel between kuppe and burner inner liner inwall simultaneously; They are two years old, burner inner liner by cylinder and truncated cone shape tube are constituted has an inlet channel between the termination of its truncated cone shape tube and cover plate, any air admission hole or groove are not set on the described cylinder, only on the truncated cone shape tube, offer some jet orifices, between housing and truncated cone shape tube, some air vane guides are set simultaneously.Cyclone is set and air vane guide is set around the oil plant atomizer, help fuel oil atomization, mixing in the kuppe outer rim; Between air inlet bucket and cyclone, be situated between and establish throttle orifice, help preventing that eddy flow is strong excessively, avoid burner inner liner inwall temperature drop too much, cause the coking carbon deposit.Used for industrial furnace high-efficiency gasification burner of the present utility model, cooling to burner inner liner, based on outer gas stream, with the air-flow from gas channel importing between kuppe and burner inner liner inwall is auxilliary, and the purpose that the cylindrical section of burner inner liner is not offered air admission hole or groove also is this, clearly when burning, the temperature of burner inner liner cylindrical section is more much lower than the temperature of burner inner liner truncated cone shape tube, if the air capacity that cylindrical section infeeds is too much, must cause the burner inner liner inwall temperature drop of this section to be exaggerated, cause the coking carbon deposit, certainly do not offer air admission hole or groove on the cylindrical section of burner inner liner, also help the suitable backflow of flame and oil gas, especially after igniting, local or when all opening cover plate on the fire hole, consequent effect is more obvious, it makes the oil plant of atomizing the sufficient time preheating of purchasing be arranged, pyrolysis gasification fully, fully burning; Being arranged on air vane guide between burner inner liner truncated cone shape tube and housing has the effect of three aspects, the one, eddy flow, make to import the air-flow participate in burning from inlet channel between truncated cone shape tube and cover plate and be rotation status, the mixing once again that this helps flame and oil gas reaches the purpose that improves the thermal efficiency; The 2nd, the truncated cone shape tube is the high-temperature region of whole burner, and air vane guide is set thereon, helps the heat radiation of high-temperature region, also helps air-supplied preheating; The 3rd, when making the local intussusception mutually of air vane guide, then can also play the shielding action of stablizing air pressure; Air vane guide on air vane guide on the described kuppe outer rim and the burner inner liner truncated cone shape tube can dispose by helical form, and blade can twist certain angle according to actual needs, as long as guarantee that each blade blade distortion angle is consistent.

Accompanying drawing 1 is the utility model example structure schematic diagram;

Accompanying drawing 2 is accompanying drawing 1A-A cutaway views;

Accompanying drawing 3 is accompanying drawing 1B-B cutaway views.

Among aforementioned each figure: 1-housing, 2-burner inner liner, 3-cover plate, the 4-end plate, the cylinder of 5-burner inner liner, the truncated cone shape tube of 6-burner inner liner, the 7-cyclone, the air vane guide at 8-truncated cone shape tube position, 9-air inlet bucket, 10-oil plant atomizer, 11-kuppe, 12-tangential admission groove, the air vane guide of 13-kuppe outer rim, 14-throttle orifice, 15-jet orifice, the 16-fire hole, 17-fire hole removable cover, 18-inlet channel.

Embodiment:

Press shown in the accompanying drawing 1, go out the kuppe 11 of end plate 4 and band air vane guide 13, the cone-apex angle of kuppe 11 is processed into 150 °, and on end plate 4, processes oil plant atomizer 10 mount pads, fire hole and cyclone mount pad with urib founding; Use the rolled housing 1 of heat-resisting sheet metal, cylinder 5, truncated cone shape tube 6, air inlet bucket 9 and air vane guide 8, air inlet bucket 9 and housing 1 weldering are one, cylinder 5 and 6 welderings of truncated cone shape tube are coupled together, and air vane guide 8 weldering is connected on the truncated cone shape tube 6 of holding jet orifice 15 successfully, after welding burner inner liner 2 is overlapped the housing 1 of packing into, weld cover plate 3 again; Install oil plant atomizer 10 on end plate 4, cyclone 7 and kuppe 11 install the back and with bolt end plate 4 and housing 1 are coupled together.The corresponding site that at last burner that assembles is fixed in industrial furnace gets final product.In the present embodiment, oil plant atomizer 10 preferably adopts the atomizer that uses water vapour to make atomizing medium, on the distribution ratio, infeed most air capacity from inlet channel 18 and jet orifice 15, from infeeding little part air near the oil plant atomizer 10, the corresponding techniques feature is that the area sum of the area of tangential admission groove 12 and the gas channel between kuppe 11 and burner inner liner 2 inwalls is jet orifice 15, inlet channel 18 area sums 0,3～0,5 times therewith.The benefit that adopts water vapour to make atomizing medium is that the gasification that helps fuel oil changes, and also helps the stable black area that is fit to simultaneously, can make flame burning stable.The used for industrial furnace high-efficiency gasification burner of present embodiment is mixed blower fan, oil pump, and blast is set in the scope of 300～1500mm water column, and oil pressure is set in 1～10kg/cm ²Scope in, the water vapor pressure of oil plant atomizer 10 is set in 2～10kg/cm ²Scope in, the igniting smooth combustion after, flame temperature can reach more than 1300 ℃, the length of flame can be adjusted in 0,1～10 meter scope.Partly or all open fire hole removable cover 17, can adjust the reflux state of flame, foregoingly can make atomized fuel that the time enough preheating is arranged so like that, pyrolysis gasification fully, fully the coking carbon deposit is thoroughly eliminated in burning.

Claims

1, a kind of used for industrial furnace high-efficiency gasification burner, contain housing 1, burner inner liner 2, oil plant atomizer 10, cover plate 3 and end plate 4, be welded with air inlet bucket 9 on the described housing 1, described burner inner liner 2 is made of cylinder 5 and 6 in truncated cone shape tube, on the described end plate 4 oil plant atomizer 10 is housed, and be evenly equipped with fire hole 16 around oil plant atomizer 10, described fire hole 16 has removable cover 17, it is characterized in that:

A, be provided with the cyclone 7 that has tangential admission groove 12 on the circumference round oil plant atomizer 10, described cyclone 7, it is 100 °～150 ° truncated cone shape kuppe 11 that cone-apex angle is equipped with in its top, and be situated between between itself and the air inlet bucket 9 throttle orifice 14 is arranged, leave gas channel between described truncated cone shape kuppe 11 and burner inner liner 2 inwalls, and outer rim is provided with air vane guide 13;

Be provided with inlet channel 18 between b, truncated cone shape tube 6 and the cover plate 3, the jet orifice 15 on the burner inner liner 2 is opened on the truncated cone shape tube 6, is provided with air vane guide 8 between described truncated cone shape tube 6 and the housing 1.

2,, it is characterized in that described oil plant atomizer 10 adopts water vapour to make atomizing medium according to the described a kind of used for industrial furnace high-efficiency gasification burner of claim 1.

3, according to claim 1 or 2 described a kind of used for industrial furnace high-efficiency gasification burners, the area sum that it is characterized in that gas channel between the area of tangential admission groove 12 and kuppe 11 and burner inner liner 2 inwalls is jet orifice 15, inlet channel 18 area sums 0,3～0,5 times.